Displ commnt fx shaft of ulna, r arm, 7thN

This code signifies a complex, displaced fracture involving multiple bone fragments in the shaft of the right ulna. It specifically indicates that the fracture is an open injury, classified as Type IIIA, IIIB, or IIIC, and is being treated in a subsequent encounter due to a failure of the bone to heal (nonunion).

This code is appropriate for follow-up visits or hospitalizations where a patient is receiving ongoing care for a previously diagnosed open comminuted fracture of the right ulnar shaft. It should be used when the fracture has not healed as expected and is now considered a nonunion, requiring further intervention or management.

• Ensure documentation clearly specifies "nonunion" and the open fracture type (IIIA, IIIB, or IIIC).
• Verify the encounter is "subsequent" and not initial care for the fracture.
• Confirm the fracture is of the ulna shaft and on the right arm.